Gelidi

Gelidi is a genus of lichen-forming fungi in the family Lichinaceae. The genus was described in 1932 by Josef Suza. Lichens in the genus Gelidi are characterized by their crustose thalli, which are typically thin and encrusting on their substrates. They are often found on calcareous rocks, particularly in coastal or maritime environments. The apothecia, which are the fruiting bodies of the fungus, are usually lecideine, meaning they lack a distinct excipulum. The ascospores of Gelidi species are typically simple and hyaline. This genus is part of a broader group of lichens that contain cyanobacteria as their photosynthetic partners. While not as widely known as some other lichen genera, Gelidi plays a role in the ecological communities where it occurs, contributing to soil formation and providing habitat. Further research into the biodiversity and ecological significance of Gelidi species is ongoing.